Kerwin Tyge (b. 1974) was a low-level drug seller who worked for Marvin Dance in Los Angeles. On 27 December 1992, LAPD detective Tom Rickard tracked him to a rave, and called Harry Bosch because of Tyge's relation to a case that Bosch was investigating. Tyge was arrested for possession of two ounces of liquid PCP and distribution of "sherms."